UC3843D1 Fairchild Semiconductor, UC3843D1 Datasheet - Page 2

Current Mode PWM Controllers Current Mode PWM Control IC

UC3843D1

Manufacturer Part Number
UC3843D1
Description
Current Mode PWM Controllers Current Mode PWM Control IC
Manufacturer
Fairchild Semiconductor
Datasheet

Specifications of UC3843D1

Number Of Outputs
1
Duty Cycle (max)
100 %
Output Current
1000 mA
Mounting Style
SMD/SMT
Package / Case
SOP-8
Switching Frequency
500 KHz
Maximum Operating Temperature
+ 70 C
Fall Time
35 ns
Minimum Operating Temperature
0 C
Rise Time
45 ns
Synchronous Pin
No
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
UC3842/UC3843/UC3844/UC3845
Absolute Maximum Ratings
Note:
1. Board Thickness 1.6mm, Board Dimension 76.2mm 114.3mm, (Reference EIA / JSED51-3, 51-7)
2. Do not exceeed P
Power Dissipation Curve
Thermal Data
Pin Array
2
Parameter
Supply Voltage
Output Current
Analog Inputs (Pin 2.3)
Error Amp Output Sink Current
Power Dissipation at T
Power Dissipation at T
Power Dissipation at T
Storage Temperature Range
Lead Temperature (Soldering, 10sec)
Characteristic
Thermal Resistance Junction-ambient
D
and SOA (Safe Operation Area)
A
A
A
25 C (8DIP)
25 C (8SOP)
25 C (14SOP)
CURRENT SENSE
CURRENT SENSE
CURRENT SENSE
1200
1200
1100
1100
1000
1000
600
600
500
500
400
400
900
900
800
800
700
700
300
300
COMP 1
COMP 1
COMP 1
R
R
R
T/
T/
T/
V
V
V
C
C
C
0
0
FB
FB
FB
T
T
T
2
2
2
3
3
3
4
4
4
8SOP
8SOP
10
10
8DIP,8SOP
8DIP,8SOP
20
20
R
thj-amb(MAX)
30
30
30
Symbol
AMBIENT TEMPERATURE (℃)
AMBIENT TEMPERATURE (℃)
40
40
40
P
P
P
8
8
8
7
7
7
6
6
6
5
5
5
I
SINK (E.A)
D
D
D
50
50
50
OUTPUT
OUTPUT
OUTPUT
GND
GND
GND
Symbol
V
V
V
V
V
V
V
REF
REF
REF
CC
CC
CC
T
14SOP
14SOP
(Note1,2)
(Note1,2)
(Note1,2)
T
V
(ANA)
LEAD
STG
I
60
60
60
CC
CURRENT SENSE
CURRENT SENSE
CURRENT SENSE
O
70
70
70
80
80
80
COMP 1
COMP 1
COMP 1
R
R
R
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
N/C
T/
T/
T/
V
V
V
C
C
C
FB
FB
FB
8-DIP
T
T
T
90
90
90
100
8DIP
8DIP
4
4
4
6
6
6
7
7
7
2
2
2
3
3
3
5
5
5
100 110 120 130 140 150
100 110
100 110 120 130 140
14SOP
14SOP
120 130 140 150
-65 ~ +150
-0.3 to 6.3
13
13
13
12
12
12
10
10
10
Value
14
14
14
11
11
11
8-SOP
9
9
9
8
8
8
+300
1200
460
680
30
10
265
V
V
V
N/C
N/C
N/C
V
V
V
PWR V
PWR V
PWR V
OUTPUT
OUTPUT
OUTPUT
GND
GND
GND
PWR GND
PWR GND
PWR GND
REF
REF
REF
CC
CC
CC
1
C
C
C
14-SOP
180
Unit
mW
mW
mW
mA
V
A
V
C
C
Unit
C/W

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